Champagne:
Roederer 242 or 244
NV Vilmart Grand Cellier
NV Marc Hebrart rosé
NV Jose Michel Brut
NV Robert Moncuit BdB
NV (but really vintage) Marguet Shaman
Two of each; should all be available at Envoyer.
All should be able to be enjoyable for 5 years and interesting at 10+.